I guess I want to put this out, since it seems no other reviews ever mentioned this. To be honest, if I knew this before I bought the amp, I would probably bought something else. So, I have Hegel H160 for more than a year now. I pair it with KEF R500. As far as sound quality is concerned, I can say I'm 100% happy. I use it exclusively with NAS and a bunch of flac files that are at least at CD quality (some are HD). But, there are some issues with this amp. First, and the most important one - it overheats! If you put it to about 70% power output and listen for 10, 15 minutes, it just stops (with 'heat' blinking in display). It happens EVERY time. Sure, 70% in my rather small room is loud, but sometimes, I like that. I contacted Hegel support about this, and the first reaction was 'Noooo that shouldn't happen, do you have it in some closed area or covered with something?' When I said 'no', the guy told me that he spoke to engineers and that 'it's normal'.In my opinion, this should not be normal at all! The amp should have been designed so it can deliver and sustain it's power for some time that's measured in hours, not minutes'. So now, I use it with a small battery powered fan that I bought from e-bay. I have a 2500 euros amp that can't do what it was supposed to and I need to fix it with a 2 euro fan from e-bay. So far, it seems to work, at that levels I can't hear the fan, most of the time at least. But, still, it's a major design flaw in my opinion. Second. A I said, I use it only with NAS and BubbleUPnP android app. Again, it kind of works. As long as you don't use volume up/down too much, usually, it's great. But, if you do, it's only a matter of time before the amp becomes unresponsive and nothing else works. The current song play out till the end, but then you need to turn the amp off and turn it on again. So again, I use the remote to get around this, but it's annoying. I contacted Bubble about this and they told me a few tweaks that might help - they didn't. So, there it is. A great sounding amp, with at least one major design flaw.